Insomnia was one of my worst symptoms too, I'm not surprised you feel awful. It's impossible to feel well when you can't sleep. HRT sorted it out for me, hopefully it will for you too (it did take a little time though). Have you been given topical oestrogen for your VA? You really need it now, it will only get worse without it. It might be worth getting your thumb investigated separately as it may not be meno related. Is this the only joint that's painful?
Have a look at the 'advice for husbands' pinned post. The way you are - including the irritability - isn't your fault.